Jennifer Lawrence Hilarious, Happy And More Relaxed Than Ever! Why 'The Hunger Games' Star Is In A Better Place Emotionally (VIDEO)

Jennifer Lawrence was hilarious as always when she played Box of Lies with Jimmy Fallon on 'The Tonight Show' this week. But there was something else that became obvious: 'The Hunger Games' actress was more relaxed than we've seen her in a LONG time.

Jennifer Lawrence was back to her old self with a hilarious bearded segment with Jimmy Fallon this week. Giggling throughout a hysterical game of Box of Lies, the X-Men actress and talk-show host chose objects from shelves and they had to describe them through a partition. The catch? You're allowed to lie about the object you're describing.

The blond beauty was adorable as always as she (unsurprisingly) fumbled her lies. But the thing that was the most obvious about her appearance on The Tonight Show and two days later at the Cannes Film Festival is that the actress who complained of ulcers last year finally seems like she's back to normal.

Promoting The Hunger Games and American Hustle back to back last year, Lawrence was looking exhausted and frazzled. And she wasn't hiding it.

Jennifer Lawrence got cozy under a blanket when she visited the 'Late Show with David Letterman' on Nov. 20, 2013.

In November, the 23-year-old was so exhausted when she visited David Letterman, that she even ended up under a blanket! But first they had a conversation about frequent health problems she was having.

“I thought I had an ulcer, but it turns out it was a 'fulcer,'" Lawrence said, coining a new word. "I went to the emergency room. I just had this really bad pain for, like, three weeks. And you know, you can only s--t your pants so many times a day before you go to the emergency room, before you're like 'I need to go to the hospital.'"

Lawrence was able to laugh at her experience in the hospital, but it sounded pretty horrible. "But I just did this thing yesterday called an endoscopo-something, where they put you to sleep?" Lawrence continued. "And the woman — it's pretty clear when you first meet me, I'm a freakin' head case and I'm crazy — so I'm in there like, ‘Ugh, what are these?! What do they mean?! What does that say?!'"

This week, Jennifer Lawrence traveled from 'The Tonight Show' to the Cannes Film Festival. Funny and flirty, the Dior-clad actress wowed us like only she can. Our love affair has started all over again!

Lawrence even looked exhausted at the Oscars, and has since admitted she got drunk and threw up that evening. But since the beginning of March, JLaw stepped out of the spotlight. Until her recent appearances promoting X-Men: Days of Future Past and Hunger Games, Nicholas Hoult's girlfriend took it easy for a few months. And it seemed to clear her head and get her back on track.

In her two appearances this week, Lawrence wasn't just hilarious. She was happy. Even the outfits she's chosen for her two big appearances have been more casual than her Hunger Games dresses last year.

JLaw seems to have gotten a lot of R&R. And she seems more confident in her own skin. Here are five ways that the blond beauty has come into her own this month.

1. She's No Longer Trying To Prove Herself

When JLaw showed up at the 'Hunger Games' premiere in L.A. in November she left little to the imagination with a transparent Dior gown. The look was undoubtedly meant to turn heads and create a wow factor.

Six months later at the 'X-Men' premiere, JLaw went far more casual in a slinky slipdress by Jason Wu. It was clear the A-lister no longer had to prove herself. She's done just that.

During the non-stop Hunger Games premieres around the world in late 2013, Lawrence worked hard to make a statement on the red carpet. But in her last few public appearances she's gone far more casual. The effect? Calm, cool and confident.

2. She's More Comfortable In Her Own Skin (And Hair!)

Jennifer Lawrence's hair was at that awkward length between pixie and bob when she appeared at the Vanity Fair After-Party at the 2014 Oscars.

Did you think Jennifer Lawrence’s private rape joke was offensive?

Any woman knows that growing out an ultra-short haircut can be painful. JLaw experienced that exact dilemma during award season in February and March 2014. But when she appeared in Cannes this week, she finally had an adorable bob, and her locks were tousled to perfection.

3. She's Rocking Her Interviews

In November, Lawrence let her interview with David Letterman get off topic, telling him countless stories about her health problems. Six months later on The Tonight Show, JLaw was in full control of her interview with Jimmy Fallon, blaming him for making her look bad in front of Jennifer Lopez.

4. She's Carrying Herself With Poise

JLaw used to make a scene on the red carpet.

Over time, Jennifer Lawrence has become a bit more subdued on the red carpet.

Though we adore JLaw's say-anything personality, her shocking comments were starting to get more press than her critically acclaime performances. No longer. These days, Lawrence is being hailed for her adorable personality — not her outlandish moves.

5. She's Found A True Partner

After a long-standing on-again, off-again relationship, these co-stars are definitely back on!

Jennifer Lawrence's sexy boyfriend and co-star Nicholas Hoult bowled us over once again at the 'X-Men' premiere in NYC with his bright-blue eyes and retro tie.

Though JLaw and her co-star Nicholas Hoult took a break for a while, they are very much back ON and happier than ever. Though there were rumors in 2013 that they were getting engaged, sad fans soon learned that they'd have to wait for Hoult to pop the question.

Why do you think Jennifer Lawrence is so much calmer these days? Let us know your take in the comments section below!